{"id":113,"date":"2024-05-28T18:23:40","date_gmt":"2024-05-28T10:23:40","guid":{"rendered":"https:\/\/www.tqazy.com\/?p=113"},"modified":"2024-05-28T18:23:40","modified_gmt":"2024-05-28T10:23:40","slug":"qualifier","status":"publish","type":"post","link":"https:\/\/www.tqazy.com\/?p=113","title":{"rendered":"@Qualifier"},"content":{"rendered":"

@Qualifier<\/h1>\n

\u6982\u5ff5<\/h2>\n

@Qualifier<\/code> \u6ce8\u89e3\u4f4d\u4e8ejavax.inject\u5305\u4e0b\uff08Java EE\u6807\u51c6\uff0c\u4e5f\u5b58\u5728\u4e8eSpring\u6846\u67b6\u7684org.springframework.beans.factory.annotation\u5305\u4e2d\u4f5c\u4e3a\u540c\u540d\u6ce8\u89e3\uff0c\u529f\u80fd\u76f8\u540c\uff09\u3002<\/p>\n

\u5b83\u662f\u4e00\u4e2a\u9650\u5b9a\u7b26\u6ce8\u89e3\uff0c\u7528\u4e8e\u89e3\u51b3\u5f53\u6709\u591a\u4e2a\u76f8\u540c\u7c7b\u578b\u7684Bean\u5019\u9009\u8005\u65f6\uff0c\u7cbe\u786e\u6307\u5b9a\u5e94\u8be5\u6ce8\u5165\u54ea\u4e00\u4e2aBean\u7684\u95ee\u9898\u3002\u4e0e\u57fa\u4e8e\u7c7b\u578b\u7684\u81ea\u52a8\u88c5\u914d\uff08\u5982@Autowired<\/code>\uff09\u7ed3\u5408\u4f7f\u7528\u65f6\uff0c\u5b83\u63d0\u4f9b\u4e86\u989d\u5916\u7684\u8bed\u4e49\u6765\u6d88\u9664\u6b67\u4e49\u3002<\/p>\n

\u901a\u4fd7\u8bf4\u6cd5<\/h2>\n

\u60f3\u8c61\u4f60\u53bb\u8d85\u5e02\u4e70\u82f9\u679c\uff0c\u4f46\u8d85\u5e02\u6709\u4e24\u79cd\u82f9\u679c\uff1a\u7ea2\u82f9\u679c\u548c\u9752\u82f9\u679c\u3002<\/p>\n

\u5982\u679c\u4f60\u53ea\u662f\u8bf4\u201c\u7ed9\u6211\u4e00\u4e2a\u82f9\u679c\u201d\uff0c\u552e\u8d27\u5458\u5c31\u4e0d\u77e5\u9053\u4f60\u8981\u54ea\u79cd\u3002<\/p>\n

\u8fd9\u65f6\uff0c\u4f60\u5982\u679c\u8bf4\u201c\u7ed9\u6211\u4e00\u4e2a\u7ea2\u82f9\u679c\u201d\uff0c\u5c31\u660e\u786e\u4e86\u4f60\u7684\u9009\u62e9\u3002<\/p>\n

@Qualifier<\/code> \u5c31\u50cf\u4f60\u6307\u5b9a\u8981\u201c\u7ea2\u82f9\u679c\u201d\u4e00\u6837\uff0c\u544a\u8bc9Spring\u4f60\u8981\u6ce8\u5165\u7684\u5177\u4f53\u662f\u54ea\u4e2aBean\u3002<\/p>\n

\u6240\u5c5e<\/h2>\n
\n

Java EE\u6807\u51c6\uff1ajavax.inject.Qualifier<\/p>\n

Spring\u6846\u67b6\uff1aorg.springframework.beans.factory.annotation.Qualifier<\/p>\n<\/blockquote>\n

\u4f5c\u7528<\/h2>\n
    \n
  • \u89e3\u51b3\u4f9d\u8d56\u6ce8\u5165\u65f6\u7684\u591aBean\u51b2\u7a81\u95ee\u9898\uff0c\u5373\u5f53\u4e00\u4e2a\u63a5\u53e3\u6709\u591a\u4e2a\u5b9e\u73b0\u7c7b\u65f6\uff0c\u7cbe\u786e\u6307\u5b9a\u6ce8\u5165\u54ea\u4e00\u4e2a\u5b9e\u73b0\u3002<\/li>\n
  • \u63d0\u4f9b\u66f4\u7ec6\u7c92\u5ea6\u7684\u63a7\u5236\uff0c\u5141\u8bb8\u5f00\u53d1\u8005\u57fa\u4e8e\u540d\u5b57\u6216\u8005\u5176\u4ed6\u903b\u8f91\u6765\u533a\u5206Bean\u3002<\/li>\n<\/ul>\n

    \u7528\u6cd5<\/h2>\n
      \n
    • \u4e0e @Autowired<\/code> \u6216\u5176\u4ed6\u4f9d\u8d56\u6ce8\u5165\u6ce8\u89e3\u4e00\u8d77\u4f7f\u7528\uff0c\u5728\u9700\u8981\u6ce8\u5165\u7684\u5730\u65b9\u6807\u6ce8\u3002<\/li>\n
    • \u901a\u5e38\u4e0e\u81ea\u5b9a\u4e49\u7684\u9650\u5b9a\u7b26\u6ce8\u89e3\uff08\u7ee7\u627f\u81ea @Qualifier<\/code> \uff09\u7ed3\u5408\uff0c\u63d0\u4f9b\u66f4\u6709\u610f\u4e49\u7684\u540d\u5b57\u533a\u5206\u3002<\/li>\n<\/ul>\n

      \u4f7f\u7528\u573a\u666f<\/h2>\n
        \n
      • \u5f53\u4e00\u4e2a\u63a5\u53e3\u6709\u591a\u4e2a\u5b9e\u73b0\u7c7b\uff0c\u5e76\u4e14\u9700\u8981\u6839\u636e\u5177\u4f53\u60c5\u5883\u6ce8\u5165\u4e0d\u540c\u7684\u5b9e\u73b0\u65f6\u3002<\/li>\n
      • \u5f53\u9700\u8981\u4f9d\u8d56\u6ce8\u5165\u7684Bean\u4e0d\u662f\u552f\u4e00\u5339\u914d\u65f6\uff0c\u9700\u8981\u8fdb\u4e00\u6b65\u660e\u786e\u6307\u5b9a\u3002<\/li>\n<\/ul>\n

        \u4f7f\u7528\u793a\u4f8b<\/h2>\n

        \u5047\u8bbe\u6709\u4e00\u4e2a\u63a5\u53e3 MessageService<\/code> \u548c\u4e24\u4e2a\u5b9e\u73b0\u7c7b EmailService<\/code> \u4e0e SmsService<\/code>\u3002<\/p>\n

        public interface MessageService {}\n\n@Service("emailService")\npublic class EmailServiceImpl implements MessageService {}\n\n@Service("smsService")\npublic class SmsServiceImpl implements MessageService {}<\/code><\/pre>\n
        \u5728\u9700\u8981\u6ce8\u5165\u7684\u5730\u65b9\uff0c\u4f7f\u7528 @Autowired<\/code> \u548c @Qualifier<\/code> \u6765\u6307\u5b9a\u786e\u5207\u7684Bean\uff1a<\/p>\n
        @Controller\npublic class MessageController {\n    \/\/ \u4f7f\u7528@Qualifier\u6307\u5b9a\u6ce8\u5165\u540d\u4e3a'emailService'\u7684Bean\n    @Autowired\n    @Qualifier("emailService")\n    private MessageService messageService;\n}<\/code><\/pre>\n
        \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5c3d\u7ba1 MessageService<\/code> \u63a5\u53e3\u6709\u591a\u4e2a\u5b9e\u73b0\uff0c\u901a\u8fc7 @Qualifier("emailService")<\/code>\uff0c\u6211\u4eec\u660e\u786e\u544a\u8bc9Spring\u5bb9\u5668\u5e94\u8be5\u6ce8\u5165 EmailServiceImpl<\/code> \u5b9e\u4f8b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
        @Qualifier \u6982\u5ff5 @Qualifier \u6ce8\u89e3\u4f4d\u4e8ejavax.inject\u5305\u4e0b\uff08Java EE\u6807\u51c6\uff0c\u4e5f […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42],"tags":[43],"class_list":["post-113","post","type-post","status-publish","format-standard","hentry","category-42","tag-43"],"yoast_head":"\n@Qualifier | \u9676\u5176\u7684\u4e2a\u4eba\u535a\u5ba2<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.tqazy.com\/?p=113\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"@Qualifier | \u9676\u5176\u7684\u4e2a\u4eba\u535a\u5ba2\" \/>\n<meta property=\"og:description\" content=\"@Qualifier \u6982\u5ff5 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